Question: python ciphertext obtain by 3 fold application of affine cipher...
Question details
Python
Ciphertext obtain by 3 fold application of affine cipher.
PYBBKLEMMKMLGHMGQEHPKLUREYJIQYJEKHOGQEMZRGQIGCRGSLYOHKGIM

 1st letter of plaintext is h. So recover entire message and
fix typo.
Steps:
— Write a program that implements an affine cipher with a
given cipher key. The program should input plaintext, alpha, beta
and output ciphertext.
— Write a program that implements the decryption for an affine
cipher with a given decryption key.
— list all the values of alpha in affine cipher. Compile list
of inverse modulo 26 of these ‘alpha’s’